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clear
//
//
//
//Variable declaration
n1=1.50 //Core refractive index
n2=1.47 //Cladding refractive index
//Calculation
phic=asin(n2/n1) //critical angle(radian)
phic=phic*180/%pi //critical angle(degrees)
NA=sqrt(n1**2-n2**2) //numerical aperture
phimax=asin(NA) //acceptance angle(radian)
phimax=asin(NA)*180/%pi //acceptance angle(degrees)
//Result
printf("\n critical angle is %0.1f degrees",phic)
printf("\n numerical aperture is %0.1f ",NA)
printf("\n acceptance angle is %0.1f degrees",phimax)
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